<html>
    <head>
        <script src="https://cdn.jsdelivr.net/npm/vue@2.6.12"></script>
    </head>
    <body>
        
        <div id="app">
            <h3>本书教大家如何学习{{message}}</h3>
        </div>
        <script>
          new Vue({
              el:'#app',
              data:{
                  message:'Vue.js'
              }
          })
        </script>
    </body>
</html>